[sleebus.jones]

Hmmmm. Well, looks like you are doing all you can to minimize RFI. I agree, it's unlikely the batts are the problem. I might have a ferrite ring around here somewhere. If I can find it, I'll send it to ya. I don't remember if you are running the airtronics RX (or maybe you said it was a XXL?) I don't know the performance differences between the XXL and XXT, all I know is that mine is smooth as silk after I got one. If you can get your hands on one to test, it might be worth it.

I think a RX pack is a logical next step to debug the problem. Oh! one last thing...do you have your antenna located away from the motor? I've got mine up front with the servo. Looks funky but works great.

Sleeb